Air Quality Index Report

Dataset statistics

Number of variables	18
Number of observations	4559
Missing cells	0
Missing cells (%)	0.0%
Duplicate rows	0
Duplicate rows (%)	0.0%
Total size in memory	676.7 KiB
Average record size in memory	152.0 B

Variable types

DateTime	1
Categorical	1
Numeric	16

Alerts

`BP` is highly overall correlated with `CO` and 4 other fields	High correlation
`CO` is highly overall correlated with `BP` and 3 other fields	High correlation
`CO 8hr` is highly overall correlated with `BP` and 4 other fields	High correlation
`NO` is highly overall correlated with `NO2` and 2 other fields	High correlation
`NO2` is highly overall correlated with `NO` and 2 other fields	High correlation
`O3` is highly overall correlated with `O3 8hr` and 1 other fields	High correlation
`O3 8hr` is highly overall correlated with `O3` and 1 other fields	High correlation
`PM10` is highly overall correlated with `BP` and 6 other fields	High correlation
`PM2.5` is highly overall correlated with `BP` and 6 other fields	High correlation
`RH` is highly overall correlated with `O3` and 2 other fields	High correlation
`Rain` is highly overall correlated with `V Wind Speed`	High correlation
`Solar Rad` is highly overall correlated with `RH`	High correlation
`Temperature` is highly overall correlated with `BP` and 1 other fields	High correlation
`V Wind Speed` is highly overall correlated with `PM10` and 2 other fields	High correlation

Reproduction

Analysis started	2025-02-07 11:03:51.156742
Analysis finished	2025-02-07 11:05:10.760044
Duration	1 minute and 19.6 seconds
Software version	ydata-profiling vv4.12.2
Download configuration	config.json

Date
Date

Distinct	296
Distinct (%)	6.5%
Missing	0
Missing (%)	0.0%
Memory size	71.2 KiB

Minimum	2012-11-01 00:00:00
Maximum	2013-10-31 00:00:00
Invalid dates	0
Invalid dates (%)	0.0%

Histogram with fixed size bins (bins=50)

Time
Categorical

Distinct	24
Distinct (%)	0.5%
Missing	0
Missing (%)	0.0%
Memory size	71.2 KiB

24:00:00	209
01:00	209
21:00	207
09:00	205
23:00	204
Other values (19)	3525

Length

Max length	8
Median length	5
Mean length	5.1375302
Min length	5

Characters and Unicode

Total characters	23422
Distinct characters	11
Distinct categories	1 ?
Distinct scripts	1 ?
Distinct blocks	1 ?

The Unicode Standard assigns character properties to each code point, which can be used to analyse textual variables.

Unique

Unique	0 ?
Unique (%)	0.0%

Sample

1st row	21:00
2nd row	22:00
3rd row	23:00
4th row	24:00:00
5th row	01:00

Common Values

Value	Count	Frequency (%)
24:00:00	209	4.6%
01:00	209	4.6%
21:00	207	4.5%
09:00	205	4.5%
23:00	204	4.5%
22:00	204	4.5%
10:00	203	4.5%
20:00	203	4.5%
02:00	202	4.4%
18:00	199	4.4%
Other values (14)	2514	55.1%

Length

Histogram of lengths of the category

Value	Count	Frequency (%)
24:00:00	209	4.6%
01:00	209	4.6%
21:00	207	4.5%
09:00	205	4.5%
23:00	204	4.5%
22:00	204	4.5%
10:00	203	4.5%
20:00	203	4.5%
02:00	202	4.4%
18:00	199	4.4%
Other values (14)	2514	55.1%

Most occurring characters

Value	Count	Frequency (%)
0	11660	49.8%
:	4768	20.4%
1	2426	10.4%
2	1613	6.9%
3	578	2.5%
4	559	2.4%
9	402	1.7%
8	387	1.7%
7	364	1.6%
5	336	1.4%

Most occurring categories

Value	Count	Frequency (%)
(unknown)	23422	100.0%

Most frequent character per category

(unknown)

Value	Count	Frequency (%)
0	11660	49.8%
:	4768	20.4%
1	2426	10.4%
2	1613	6.9%
3	578	2.5%
4	559	2.4%
9	402	1.7%
8	387	1.7%
7	364	1.6%
5	336	1.4%

Most occurring scripts

Value	Count	Frequency (%)
(unknown)	23422	100.0%

Most frequent character per script

(unknown)

Value	Count	Frequency (%)
0	11660	49.8%
:	4768	20.4%
1	2426	10.4%
2	1613	6.9%
3	578	2.5%
4	559	2.4%
9	402	1.7%
8	387	1.7%
7	364	1.6%
5	336	1.4%

Most occurring blocks

Value	Count	Frequency (%)
(unknown)	23422	100.0%

Most frequent character per block

(unknown)

Value	Count	Frequency (%)
0	11660	49.8%
:	4768	20.4%
1	2426	10.4%
2	1613	6.9%
3	578	2.5%
4	559	2.4%
9	402	1.7%
8	387	1.7%
7	364	1.6%
5	336	1.4%

NO
Real number (ℝ)

High correlation

Distinct	1342
Distinct (%)	29.4%
Missing	0
Missing (%)	0.0%
Infinite	0
Infinite (%)	0.0%
Mean	5.9562031

Minimum	0.05
Maximum	117.38
Zeros	0
Zeros (%)	0.0%
Negative	0
Negative (%)	0.0%
Memory size	71.2 KiB

Quantile statistics

Minimum	0.05
5-th percentile	0.31
Q1	1.83
median	3.62
Q3	5.67
95-th percentile	20.269
Maximum	117.38
Range	117.33
Interquartile range (IQR)	3.84

Descriptive statistics

Standard deviation	9.4996387
Coefficient of variation (CV)	1.5949152
Kurtosis	36.491027
Mean	5.9562031
Median Absolute Deviation (MAD)	1.88
Skewness	5.2431025
Sum	27154.33
Variance	90.243135
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
4.93	21	0.5%
0.06	19	0.4%
4.64	17	0.4%
0.05	16	0.4%
3.23	15	0.3%
4.82	15	0.3%
4.85	15	0.3%
4.98	15	0.3%
0.39	15	0.3%
4.84	15	0.3%
Other values (1332)	4396	96.4%

Value	Count	Frequency (%)
0.05	16	0.4%
0.06	19	0.4%
0.07	14	0.3%
0.08	5	0.1%
0.09	3	0.1%
0.1	6	0.1%
0.11	6	0.1%
0.12	9	0.2%
0.13	5	0.1%
0.14	11	0.2%

Value	Count	Frequency (%)
117.38	1	< 0.1%
116.99	1	< 0.1%
106.37	1	< 0.1%
96.88	1	< 0.1%
94.6	1	< 0.1%
91.33	1	< 0.1%
87.11	1	< 0.1%
86.79	1	< 0.1%
84.61	1	< 0.1%
83.85	1	< 0.1%

NO2
Real number (ℝ)

High correlation

Distinct	1612
Distinct (%)	35.4%
Missing	0
Missing (%)	0.0%
Infinite	0
Infinite (%)	0.0%
Mean	6.97585

Minimum	0.01
Maximum	47.03
Zeros	0
Zeros (%)	0.0%
Negative	0
Negative (%)	0.0%
Memory size	71.2 KiB

Quantile statistics

Minimum	0.01
5-th percentile	0.82
Q1	3.11
median	5.42
Q3	9.19
95-th percentile	18.22
Maximum	47.03
Range	47.02
Interquartile range (IQR)	6.08

Descriptive statistics

Standard deviation	5.7520181
Coefficient of variation (CV)	0.82456161
Kurtosis	5.5544699
Mean	6.97585
Median Absolute Deviation (MAD)	2.78
Skewness	1.9366415
Sum	31802.9
Variance	33.085712
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
4.57	14	0.3%
4.14	11	0.2%
2.86	11	0.2%
5.28	11	0.2%
5.3	10	0.2%
2.42	10	0.2%
2.83	10	0.2%
4.25	10	0.2%
4.74	9	0.2%
2.43	9	0.2%
Other values (1602)	4454	97.7%

Value	Count	Frequency (%)
0.01	3	0.1%
0.03	1	< 0.1%
0.05	3	0.1%
0.06	7	0.2%
0.07	4	0.1%
0.08	6	0.1%
0.09	4	0.1%
0.1	3	0.1%
0.11	1	< 0.1%
0.12	2	< 0.1%

Value	Count	Frequency (%)
47.03	1	< 0.1%
46.49	1	< 0.1%
40.6	1	< 0.1%
40.26	1	< 0.1%
40.23	1	< 0.1%
39.8	1	< 0.1%
39.19	1	< 0.1%
37.81	1	< 0.1%
37.53	1	< 0.1%
37.27	1	< 0.1%

CO
Real number (ℝ)

High correlation

Distinct	666
Distinct (%)	14.6%
Missing	0
Missing (%)	0.0%
Infinite	0
Infinite (%)	0.0%
Mean	2.4124457

Minimum	0.3
Maximum	8.01
Zeros	0
Zeros (%)	0.0%
Negative	0
Negative (%)	0.0%
Memory size	71.2 KiB

Quantile statistics

Minimum	0.3
5-th percentile	0.7
Q1	1.25
median	1.86
Q3	2.96
95-th percentile	6.18
Maximum	8.01
Range	7.71
Interquartile range (IQR)	1.71

Descriptive statistics

Standard deviation	1.6452212
Coefficient of variation (CV)	0.68197232
Kurtosis	0.94403331
Mean	2.4124457
Median Absolute Deviation (MAD)	0.76
Skewness	1.3181863
Sum	10998.34
Variance	2.7067528
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
1.43	32	0.7%
1.49	30	0.7%
1.4	29	0.6%
1.44	29	0.6%
1.02	27	0.6%
1.2	27	0.6%
1.57	27	0.6%
1.12	26	0.6%
1.46	26	0.6%
1.41	25	0.5%
Other values (656)	4281	93.9%

Value	Count	Frequency (%)
0.3	4	0.1%
0.32	5	0.1%
0.33	3	0.1%
0.34	2	< 0.1%
0.35	3	0.1%
0.36	3	0.1%
0.37	4	0.1%
0.38	3	0.1%
0.39	2	< 0.1%
0.4	4	0.1%

Value	Count	Frequency (%)
8.01	1	< 0.1%
7.99	1	< 0.1%
7.97	1	< 0.1%
7.96	1	< 0.1%
7.89	1	< 0.1%
7.87	1	< 0.1%
7.85	1	< 0.1%
7.84	1	< 0.1%
7.8	1	< 0.1%
7.79	2	< 0.1%

CO 8hr
Real number (ℝ)

High correlation

Distinct	626
Distinct (%)	13.7%
Missing	0
Missing (%)	0.0%
Infinite	0
Infinite (%)	0.0%
Mean	2.4133428

Minimum	0.31
Maximum	7.66
Zeros	0
Zeros (%)	0.0%
Negative	0
Negative (%)	0.0%
Memory size	71.2 KiB

Quantile statistics

Minimum	0.31
5-th percentile	0.73
Q1	1.26
median	1.85
Q3	2.98
95-th percentile	6.21
Maximum	7.66
Range	7.35
Interquartile range (IQR)	1.72

Descriptive statistics

Standard deviation	1.6279345
Coefficient of variation (CV)	0.67455584
Kurtosis	0.97765865
Mean	2.4133428
Median Absolute Deviation (MAD)	0.76
Skewness	1.3376467
Sum	11002.43
Variance	2.6501707
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
1.2	30	0.7%
1.21	30	0.7%
1.45	29	0.6%
1.08	28	0.6%
1.51	28	0.6%
1.44	27	0.6%
1.62	27	0.6%
1.04	27	0.6%
1.52	27	0.6%
1.46	26	0.6%
Other values (616)	4280	93.9%

Value	Count	Frequency (%)
0.31	1	< 0.1%
0.36	6	0.1%
0.37	4	0.1%
0.38	3	0.1%
0.39	4	0.1%
0.4	1	< 0.1%
0.41	4	0.1%
0.42	3	0.1%
0.43	4	0.1%
0.45	2	< 0.1%

Value	Count	Frequency (%)
7.66	1	< 0.1%
7.56	1	< 0.1%
7.49	2	< 0.1%
7.47	2	< 0.1%
7.46	2	< 0.1%
7.45	2	< 0.1%
7.44	1	< 0.1%
7.42	1	< 0.1%
7.39	1	< 0.1%
7.38	1	< 0.1%

O3
Real number (ℝ)

High correlation

Distinct	1950
Distinct (%)	42.8%
Missing	0
Missing (%)	0.0%
Infinite	0
Infinite (%)	0.0%
Mean	10.115071

Minimum	0.06
Maximum	64.16
Zeros	0
Zeros (%)	0.0%
Negative	0
Negative (%)	0.0%
Memory size	71.2 KiB

Quantile statistics

Minimum	0.06
5-th percentile	1.45
Q1	3.645
median	5.87
Q3	11.96
95-th percentile	36.972
Maximum	64.16
Range	64.1
Interquartile range (IQR)	8.315

Descriptive statistics

Standard deviation	11.125159
Coefficient of variation (CV)	1.0998597
Kurtosis	5.0542166
Mean	10.115071
Median Absolute Deviation (MAD)	3.04
Skewness	2.2519018
Sum	46114.61
Variance	123.76916
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
3.71	15	0.3%
4.5	15	0.3%
4.4	12	0.3%
3.7	12	0.3%
5.07	11	0.2%
3.82	10	0.2%
3.98	10	0.2%
3.54	10	0.2%
1.38	10	0.2%
4.47	10	0.2%
Other values (1940)	4444	97.5%

Value	Count	Frequency (%)
0.06	1	< 0.1%
0.25	1	< 0.1%
0.27	1	< 0.1%
0.38	1	< 0.1%
0.51	1	< 0.1%
0.52	2	< 0.1%
0.53	2	< 0.1%
0.54	1	< 0.1%
0.55	2	< 0.1%
0.56	1	< 0.1%

Value	Count	Frequency (%)
64.16	1	< 0.1%
63.79	1	< 0.1%
63.37	1	< 0.1%
62.72	1	< 0.1%
62.05	1	< 0.1%
61.12	1	< 0.1%
60.96	1	< 0.1%
60.14	1	< 0.1%
59.85	1	< 0.1%
59.69	1	< 0.1%

O3 8hr
Real number (ℝ)

High correlation

Distinct	1953
Distinct (%)	42.8%
Missing	0
Missing (%)	0.0%
Infinite	0
Infinite (%)	0.0%
Mean	10.302648

Minimum	0.66
Maximum	56.54
Zeros	0
Zeros (%)	0.0%
Negative	0
Negative (%)	0.0%
Memory size	71.2 KiB

Quantile statistics

Minimum	0.66
5-th percentile	1.959
Q1	4.09
median	6.62
Q3	12.3
95-th percentile	34.063
Maximum	56.54
Range	55.88
Interquartile range (IQR)	8.21

Descriptive statistics

Standard deviation	9.8671912
Coefficient of variation (CV)	0.95773355
Kurtosis	3.6389504
Mean	10.302648
Median Absolute Deviation (MAD)	3.2
Skewness	1.9705509
Sum	46969.77
Variance	97.361463
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
3.27	11	0.2%
3.95	11	0.2%
5.48	10	0.2%
4.78	10	0.2%
4.19	10	0.2%
4.16	10	0.2%
3.31	10	0.2%
4.05	10	0.2%
3.7	10	0.2%
4.45	9	0.2%
Other values (1943)	4458	97.8%

Value	Count	Frequency (%)
0.66	2	< 0.1%
0.67	1	< 0.1%
0.68	2	< 0.1%
0.7	1	< 0.1%
0.71	1	< 0.1%
0.73	2	< 0.1%
0.74	4	0.1%
0.76	4	0.1%
0.77	1	< 0.1%
0.8	4	0.1%

Value	Count	Frequency (%)
56.54	1	< 0.1%
56.39	1	< 0.1%
54.53	1	< 0.1%
52.93	1	< 0.1%
52.68	1	< 0.1%
52.01	1	< 0.1%
52	1	< 0.1%
51.62	1	< 0.1%
51.41	1	< 0.1%
50.78	1	< 0.1%

PM2.5
Real number (ℝ)

High correlation

Distinct	3313
Distinct (%)	72.7%
Missing	0
Missing (%)	0.0%
Infinite	0
Infinite (%)	0.0%
Mean	56.240472

Minimum	0.03
Maximum	366.23
Zeros	0
Zeros (%)	0.0%
Negative	0
Negative (%)	0.0%
Memory size	71.2 KiB

Quantile statistics

Minimum	0.03
5-th percentile	6.91
Q1	16.89
median	37.19
Q3	79.085
95-th percentile	168.481
Maximum	366.23
Range	366.2
Interquartile range (IQR)	62.195

Descriptive statistics

Standard deviation	54.222696
Coefficient of variation (CV)	0.96412236
Kurtosis	3.5151811
Mean	56.240472
Median Absolute Deviation (MAD)	25.01
Skewness	1.7258827
Sum	256400.31
Variance	2940.1008
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
11	28	0.6%
8	18	0.4%
6	18	0.4%
7	14	0.3%
8.03	14	0.3%
17	13	0.3%
9	12	0.3%
13	12	0.3%
9.94	11	0.2%
8.97	11	0.2%
Other values (3303)	4408	96.7%

Value	Count	Frequency (%)
0.03	1	< 0.1%
0.08	1	< 0.1%
0.14	2	< 0.1%
0.17	3	0.1%
0.41	1	< 0.1%
0.97	1	< 0.1%
0.98	1	< 0.1%
1.02	1	< 0.1%
1.09	1	< 0.1%
1.14	2	< 0.1%

Value	Count	Frequency (%)
366.23	1	< 0.1%
363.54	1	< 0.1%
363.32	1	< 0.1%
338.51	1	< 0.1%
336.94	1	< 0.1%
336.39	1	< 0.1%
331.38	1	< 0.1%
331.09	1	< 0.1%
315.37	1	< 0.1%
313.94	1	< 0.1%

PM10
Real number (ℝ)

High correlation

Distinct	3841
Distinct (%)	84.3%
Missing	0
Missing (%)	0.0%
Infinite	0
Infinite (%)	0.0%
Mean	98.939982

Minimum	0.17
Maximum	600.38
Zeros	0
Zeros (%)	0.0%
Negative	0
Negative (%)	0.0%
Memory size	71.2 KiB

Quantile statistics

Minimum	0.17
5-th percentile	18.927
Q1	37.955
median	72.7
Q3	139
95-th percentile	257.142
Maximum	600.38
Range	600.21
Interquartile range (IQR)	101.045

Descriptive statistics

Standard deviation	81.80088
Coefficient of variation (CV)	0.82677274
Kurtosis	3.5186723
Mean	98.939982
Median Absolute Deviation (MAD)	41.13
Skewness	1.6528059
Sum	451067.38
Variance	6691.384
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
31	10	0.2%
32	9	0.2%
33	8	0.2%
42	7	0.2%
56	6	0.1%
34.03	6	0.1%
59	6	0.1%
44	6	0.1%
23	6	0.1%
24.06	6	0.1%
Other values (3831)	4489	98.5%

Value	Count	Frequency (%)
0.17	1	< 0.1%
0.23	1	< 0.1%
1.72	1	< 0.1%
2.46	1	< 0.1%
3.5	1	< 0.1%
4.45	1	< 0.1%
5.06	1	< 0.1%
6.04	1	< 0.1%
6.12	1	< 0.1%
6.69	1	< 0.1%

Value	Count	Frequency (%)
600.38	1	< 0.1%
577.54	1	< 0.1%
535.03	1	< 0.1%
533.67	1	< 0.1%
528.32	1	< 0.1%
518.25	1	< 0.1%
504.01	1	< 0.1%
495.45	1	< 0.1%
493.02	1	< 0.1%
484.35	1	< 0.1%

Wind Speed
Real number (ℝ)

Distinct	649
Distinct (%)	14.2%
Missing	0
Missing (%)	0.0%
Infinite	0
Infinite (%)	0.0%
Mean	3.0837179

Minimum	0.37
Maximum	12.99
Zeros	0
Zeros (%)	0.0%
Negative	0
Negative (%)	0.0%
Memory size	71.2 KiB

Quantile statistics

Minimum	0.37
5-th percentile	1.2
Q1	2.08
median	2.9
Q3	3.84
95-th percentile	5.55
Maximum	12.99
Range	12.62
Interquartile range (IQR)	1.76

Descriptive statistics

Standard deviation	1.4304124
Coefficient of variation (CV)	0.46385969
Kurtosis	4.2395912
Mean	3.0837179
Median Absolute Deviation (MAD)	0.87
Skewness	1.3707105
Sum	14058.67
Variance	2.0460797
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
2.65	24	0.5%
2.53	22	0.5%
1.61	22	0.5%
2.07	21	0.5%
2.9	21	0.5%
2.33	21	0.5%
1.31	21	0.5%
2.39	20	0.4%
2.91	20	0.4%
2.35	20	0.4%
Other values (639)	4347	95.3%

Value	Count	Frequency (%)
0.37	1	< 0.1%
0.46	2	< 0.1%
0.48	1	< 0.1%
0.49	1	< 0.1%
0.5	1	< 0.1%
0.51	4	0.1%
0.52	1	< 0.1%
0.56	1	< 0.1%
0.58	2	< 0.1%
0.59	1	< 0.1%

Value	Count	Frequency (%)
12.99	1	< 0.1%
12.62	1	< 0.1%
12.41	1	< 0.1%
11.91	1	< 0.1%
11.28	1	< 0.1%
11.08	1	< 0.1%
11.01	1	< 0.1%
10.98	1	< 0.1%
10.91	1	< 0.1%
10.74	1	< 0.1%

Wind Dir
Real number (ℝ)

Distinct	4245
Distinct (%)	93.1%
Missing	0
Missing (%)	0.0%
Infinite	0
Infinite (%)	0.0%
Mean	149.92751

Minimum	0
Maximum	359.89
Zeros	1
Zeros (%)	< 0.1%
Negative	0
Negative (%)	0.0%
Memory size	71.2 KiB

Quantile statistics

Minimum	0
5-th percentile	17.851
Q1	65.4
median	146.69
Q3	220.35
95-th percentile	319.558
Maximum	359.89
Range	359.89
Interquartile range (IQR)	154.95

Descriptive statistics

Standard deviation	94.337445
Coefficient of variation (CV)	0.62922037
Kurtosis	-0.98566994
Mean	149.92751
Median Absolute Deviation (MAD)	77.73
Skewness	0.26588643
Sum	683519.53
Variance	8899.5534
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
231.15	4	0.1%
203.21	4	0.1%
15.94	3	0.1%
202.64	3	0.1%
74.91	3	0.1%
21.72	3	0.1%
72.33	3	0.1%
81.03	3	0.1%
197.77	3	0.1%
213.87	3	0.1%
Other values (4235)	4527	99.3%

Value	Count	Frequency (%)
0	1	< 0.1%
0.32	1	< 0.1%
0.35	1	< 0.1%
0.4	1	< 0.1%
0.49	1	< 0.1%
0.91	1	< 0.1%
1.08	1	< 0.1%
1.22	1	< 0.1%
1.27	2	< 0.1%
1.33	1	< 0.1%

Value	Count	Frequency (%)
359.89	1	< 0.1%
359.8	1	< 0.1%
359.79	1	< 0.1%
359.77	1	< 0.1%
359.5	2	< 0.1%
359.46	1	< 0.1%
359.32	1	< 0.1%
359.09	1	< 0.1%
358.99	1	< 0.1%
358.72	1	< 0.1%

Temperature
Real number (ℝ)

High correlation

Distinct	1710
Distinct (%)	37.5%
Missing	0
Missing (%)	0.0%
Infinite	0
Infinite (%)	0.0%
Mean	26.91107

Minimum	9.52
Maximum	38.05
Zeros	0
Zeros (%)	0.0%
Negative	0
Negative (%)	0.0%
Memory size	71.2 KiB

Quantile statistics

Minimum	9.52
5-th percentile	16.698
Q1	24.695
median	27.79
Q3	30.055
95-th percentile	33.52
Maximum	38.05
Range	28.53
Interquartile range (IQR)	5.36

Descriptive statistics

Standard deviation	4.8349642
Coefficient of variation (CV)	0.17966451
Kurtosis	0.63762922
Mean	26.91107
Median Absolute Deviation (MAD)	2.61
Skewness	-0.88886366
Sum	122687.57
Variance	23.376879
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
27.82	13	0.3%
27.78	12	0.3%
28.53	12	0.3%
27.94	12	0.3%
28.33	12	0.3%
28.07	12	0.3%
27.5	12	0.3%
27.05	11	0.2%
28.16	11	0.2%
28.12	11	0.2%
Other values (1700)	4441	97.4%

Value	Count	Frequency (%)
9.52	1	< 0.1%
9.61	1	< 0.1%
9.72	1	< 0.1%
9.74	1	< 0.1%
9.8	1	< 0.1%
9.97	1	< 0.1%
10.19	1	< 0.1%
10.74	1	< 0.1%
10.76	1	< 0.1%
10.84	1	< 0.1%

Value	Count	Frequency (%)
38.05	1	< 0.1%
38.03	1	< 0.1%
37.78	1	< 0.1%
37.72	1	< 0.1%
37.63	1	< 0.1%
37.58	1	< 0.1%
37.55	1	< 0.1%
37.3	1	< 0.1%
37.05	2	< 0.1%
36.75	1	< 0.1%

RH
Real number (ℝ)

High correlation

Distinct	2902
Distinct (%)	63.7%
Missing	0
Missing (%)	0.0%
Infinite	0
Infinite (%)	0.0%
Mean	75.817276

Minimum	22.76
Maximum	99.33
Zeros	0
Zeros (%)	0.0%
Negative	0
Negative (%)	0.0%
Memory size	71.2 KiB

Quantile statistics

Minimum	22.76
5-th percentile	47.279
Q1	67.14
median	78.9
Q3	87.115
95-th percentile	93.37
Maximum	99.33
Range	76.57
Interquartile range (IQR)	19.975

Descriptive statistics

Standard deviation	14.426508
Coefficient of variation (CV)	0.19027996
Kurtosis	0.44132165
Mean	75.817276
Median Absolute Deviation (MAD)	9.23
Skewness	-0.90344707
Sum	345650.96
Variance	208.12414
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
99.33	12	0.3%
85.85	7	0.2%
87.3	7	0.2%
87.15	6	0.1%
87.04	6	0.1%
87.52	6	0.1%
81.51	5	0.1%
76.65	5	0.1%
84.07	5	0.1%
89.78	5	0.1%
Other values (2892)	4495	98.6%

Value	Count	Frequency (%)
22.76	1	< 0.1%
23.15	1	< 0.1%
23.38	1	< 0.1%
23.56	1	< 0.1%
24.34	1	< 0.1%
25.05	1	< 0.1%
25.45	1	< 0.1%
25.64	1	< 0.1%
25.87	1	< 0.1%
26.29	1	< 0.1%

Value	Count	Frequency (%)
99.33	12	0.3%
99.32	3	0.1%
99.3	1	< 0.1%
99.29	2	< 0.1%
99.28	1	< 0.1%
99.27	1	< 0.1%
99.26	1	< 0.1%
99.19	1	< 0.1%
99.07	1	< 0.1%
99.06	1	< 0.1%

Solar Rad
Real number (ℝ)

High correlation

Distinct	2513
Distinct (%)	55.1%
Missing	0
Missing (%)	0.0%
Infinite	0
Infinite (%)	0.0%
Mean	174.45405

Minimum	5.06
Maximum	1017.8
Zeros	0
Zeros (%)	0.0%
Negative	0
Negative (%)	0.0%
Memory size	71.2 KiB

Quantile statistics

Minimum	5.06
5-th percentile	6.89
Q1	7.45
median	10.49
Q3	303.18
95-th percentile	719.077
Maximum	1017.8
Range	1012.74
Interquartile range (IQR)	295.73

Descriptive statistics

Standard deviation	246.8172
Coefficient of variation (CV)	1.4147978
Kurtosis	0.6563686
Mean	174.45405
Median Absolute Deviation (MAD)	3.9
Skewness	1.3656399
Sum	795336
Variance	60918.732
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
7.35	34	0.7%
7.45	34	0.7%
7.5	32	0.7%
7.56	32	0.7%
7.34	31	0.7%
7.48	31	0.7%
7.66	30	0.7%
7.52	30	0.7%
7.55	28	0.6%
7.57	28	0.6%
Other values (2503)	4249	93.2%

Value	Count	Frequency (%)
5.06	1	< 0.1%
5.48	1	< 0.1%
5.64	1	< 0.1%
5.7	1	< 0.1%
5.71	1	< 0.1%
5.74	1	< 0.1%
5.84	1	< 0.1%
5.87	1	< 0.1%
5.91	1	< 0.1%
5.94	1	< 0.1%

Value	Count	Frequency (%)
1017.8	1	< 0.1%
1004.64	1	< 0.1%
1001.07	1	< 0.1%
998.57	1	< 0.1%
994.91	1	< 0.1%
993.97	1	< 0.1%
985.07	1	< 0.1%
983.61	1	< 0.1%
975.11	1	< 0.1%
974.9	1	< 0.1%

BP
Real number (ℝ)

High correlation

Distinct	2032
Distinct (%)	44.6%
Missing	0
Missing (%)	0.0%
Infinite	0
Infinite (%)	0.0%
Mean	1087.466

Minimum	1072.77
Maximum	1101.18
Zeros	0
Zeros (%)	0.0%
Negative	0
Negative (%)	0.0%
Memory size	71.2 KiB

Quantile statistics

Minimum	1072.77
5-th percentile	1077.588
Q1	1082.21
median	1087.51
Q3	1092.77
95-th percentile	1097.32
Maximum	1101.18
Range	28.41
Interquartile range (IQR)	10.56

Descriptive statistics

Standard deviation	6.3168966
Coefficient of variation (CV)	0.0058088222
Kurtosis	-1.0144406
Mean	1087.466
Median Absolute Deviation (MAD)	5.28
Skewness	-0.027296065
Sum	4957757.4
Variance	39.903182
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
1091.01	7	0.2%
1092.72	7	0.2%
1085.87	7	0.2%
1085.78	7	0.2%
1084.12	7	0.2%
1091.72	7	0.2%
1089.4	7	0.2%
1095.28	7	0.2%
1091.21	7	0.2%
1081.79	7	0.2%
Other values (2022)	4489	98.5%

Value	Count	Frequency (%)
1072.77	1	< 0.1%
1072.98	1	< 0.1%
1073.04	1	< 0.1%
1073.14	2	< 0.1%
1073.16	1	< 0.1%
1073.49	1	< 0.1%
1073.5	1	< 0.1%
1073.55	1	< 0.1%
1073.66	1	< 0.1%
1073.67	1	< 0.1%

Value	Count	Frequency (%)
1101.18	1	< 0.1%
1100.94	1	< 0.1%
1100.89	1	< 0.1%
1100.88	2	< 0.1%
1100.75	1	< 0.1%
1100.74	1	< 0.1%
1100.71	1	< 0.1%
1100.63	1	< 0.1%
1100.56	3	0.1%
1100.5	1	< 0.1%

Rain
Real number (ℝ)

High correlation

Distinct	183
Distinct (%)	4.0%
Missing	0
Missing (%)	0.0%
Infinite	0
Infinite (%)	0.0%
Mean	0.12366528

Minimum	0.01
Maximum	10.35
Zeros	0
Zeros (%)	0.0%
Negative	0
Negative (%)	0.0%
Memory size	71.2 KiB

Quantile statistics

Minimum	0.01
5-th percentile	0.01
Q1	0.01
median	0.02
Q3	0.04
95-th percentile	0.36
Maximum	10.35
Range	10.34
Interquartile range (IQR)	0.03

Descriptive statistics

Standard deviation	0.58354533
Coefficient of variation (CV)	4.7187484
Kurtosis	99.185542
Mean	0.12366528
Median Absolute Deviation (MAD)	0.01
Skewness	9.0549939
Sum	563.79
Variance	0.34052515
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
0.01	1302	28.6%
0.02	1115	24.5%
0.03	827	18.1%
0.04	596	13.1%
0.05	257	5.6%
0.06	82	1.8%
0.1	15	0.3%
0.11	13	0.3%
0.07	11	0.2%
0.15	11	0.2%
Other values (173)	330	7.2%

Value	Count	Frequency (%)
0.01	1302	28.6%
0.02	1115	24.5%
0.03	827	18.1%
0.04	596	13.1%
0.05	257	5.6%
0.06	82	1.8%
0.07	11	0.2%
0.08	3	0.1%
0.09	3	0.1%
0.1	15	0.3%

Value	Count	Frequency (%)
10.35	1	< 0.1%
8.99	1	< 0.1%
8.16	1	< 0.1%
7.9	1	< 0.1%
7.7	1	< 0.1%
7.32	1	< 0.1%
7.24	1	< 0.1%
6.59	1	< 0.1%
6.36	1	< 0.1%
6.25	1	< 0.1%

V Wind Speed
Real number (ℝ)

High correlation

Distinct	217
Distinct (%)	4.8%
Missing	0
Missing (%)	0.0%
Infinite	0
Infinite (%)	0.0%
Mean	1.7323492

Minimum	0.99
Maximum	3.74
Zeros	0
Zeros (%)	0.0%
Negative	0
Negative (%)	0.0%
Memory size	71.2 KiB

Quantile statistics

Minimum	0.99
5-th percentile	1.13
Q1	1.31
median	1.62
Q3	2.12
95-th percentile	2.58
Maximum	3.74
Range	2.75
Interquartile range (IQR)	0.81

Descriptive statistics

Standard deviation	0.48491834
Coefficient of variation (CV)	0.27991951
Kurtosis	-0.63967947
Mean	1.7323492
Median Absolute Deviation (MAD)	0.37
Skewness	0.54950468
Sum	7897.78
Variance	0.2351458
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
1.23	63	1.4%
1.2	58	1.3%
1.22	56	1.2%
1.25	56	1.2%
1.33	56	1.2%
1.35	55	1.2%
1.21	55	1.2%
1.28	55	1.2%
1.27	54	1.2%
1.3	52	1.1%
Other values (207)	3999	87.7%

Value	Count	Frequency (%)
0.99	1	< 0.1%
1	3	0.1%
1.01	4	0.1%
1.02	8	0.2%
1.03	4	0.1%
1.04	7	0.2%
1.05	6	0.1%
1.06	14	0.3%
1.07	18	0.4%
1.08	24	0.5%

Value	Count	Frequency (%)
3.74	1	< 0.1%
3.69	1	< 0.1%
3.5	2	< 0.1%
3.48	1	< 0.1%
3.39	1	< 0.1%
3.31	1	< 0.1%
3.17	1	< 0.1%
3.16	1	< 0.1%
3.14	1	< 0.1%
3.1	1	< 0.1%

	BP	CO	CO 8hr	NO	NO2	O3	O3 8hr	PM10	PM2.5	RH	Rain	Solar Rad	Temperature	Time	V Wind Speed	Wind Dir	Wind Speed
BP	1.000	0.597	0.622	0.363	0.300	-0.117	-0.093	0.628	0.692	-0.016	-0.338	0.030	-0.679	0.112	-0.369	0.074	-0.161
CO	0.597	1.000	0.947	0.472	0.247	-0.098	0.081	0.584	0.632	-0.095	-0.277	-0.093	-0.473	0.117	-0.318	0.142	-0.268
CO 8hr	0.622	0.947	1.000	0.436	0.151	-0.107	-0.022	0.539	0.604	-0.039	-0.259	-0.107	-0.539	0.103	-0.290	0.133	-0.185
NO	0.363	0.472	0.436	1.000	0.547	-0.308	-0.041	0.588	0.602	0.064	-0.230	-0.216	-0.390	0.126	-0.334	0.017	-0.304
NO2	0.300	0.247	0.151	0.547	1.000	-0.239	0.114	0.556	0.552	0.033	-0.305	-0.348	-0.302	0.199	-0.381	-0.004	-0.411
O3	-0.117	-0.098	-0.107	-0.308	-0.239	1.000	0.779	0.044	-0.037	-0.637	0.006	0.474	0.409	0.194	-0.049	0.031	0.352
O3 8hr	-0.093	0.081	-0.022	-0.041	0.114	0.779	1.000	0.267	0.184	-0.558	-0.116	0.170	0.319	0.176	-0.229	-0.002	0.065
PM10	0.628	0.584	0.539	0.588	0.556	0.044	0.267	1.000	0.946	-0.260	-0.444	-0.069	-0.357	0.117	-0.546	0.118	-0.300
PM2.5	0.692	0.632	0.604	0.602	0.552	-0.037	0.184	0.946	1.000	-0.118	-0.443	-0.142	-0.488	0.119	-0.553	0.137	-0.330
RH	-0.016	-0.095	-0.039	0.064	0.033	-0.637	-0.558	-0.260	-0.118	1.000	0.133	-0.528	-0.490	0.216	0.163	-0.059	-0.183
Rain	-0.338	-0.277	-0.259	-0.230	-0.305	0.006	-0.116	-0.444	-0.443	0.133	1.000	0.022	0.179	0.012	0.628	-0.034	0.320
Solar Rad	0.030	-0.093	-0.107	-0.216	-0.348	0.474	0.170	-0.069	-0.142	-0.528	0.022	1.000	0.379	0.375	0.057	0.095	0.257
Temperature	-0.679	-0.473	-0.539	-0.390	-0.302	0.409	0.319	-0.357	-0.488	-0.490	0.179	0.379	1.000	0.210	0.238	-0.034	0.190
Time	0.112	0.117	0.103	0.126	0.199	0.194	0.176	0.117	0.119	0.216	0.012	0.375	0.210	1.000	0.121	0.132	0.152
V Wind Speed	-0.369	-0.318	-0.290	-0.334	-0.381	-0.049	-0.229	-0.546	-0.553	0.163	0.628	0.057	0.238	0.121	1.000	-0.090	0.426
Wind Dir	0.074	0.142	0.133	0.017	-0.004	0.031	-0.002	0.118	0.137	-0.059	-0.034	0.095	-0.034	0.132	-0.090	1.000	-0.083
Wind Speed	-0.161	-0.268	-0.185	-0.304	-0.411	0.352	0.065	-0.300	-0.330	-0.183	0.320	0.257	0.190	0.152	0.426	-0.083	1.000

A simple visualization of nullity by column.

Nullity matrix is a data-dense display which lets you quickly visually pick out patterns in data completion.

	Date	Time	NO	NO2	CO	CO 8hr	O3	O3 8hr	PM2.5	PM10	Wind Speed	Wind Dir	Temperature	RH	Solar Rad	BP	Rain	V Wind Speed
20	11/01/2012	21:00	3.00	9.00	4.67	4.32	3.15	13.34	46.94	47.03	2.27	105.56	27.13	77.74	7.23	1092.92	0.01	1.16
21	11/01/2012	22:00	4.28	8.89	4.75	4.40	2.04	10.61	45.06	47.93	1.94	156.19	26.87	78.07	7.61	1093.21	0.01	1.13
22	11/01/2012	23:00	7.14	9.45	4.80	4.50	1.03	7.78	46.97	45.97	2.15	182.80	26.13	78.69	7.48	1093.19	0.01	1.15
23	11/01/2012	24:00:00	6.96	7.62	4.67	4.57	0.86	5.08	45.70	44.88	1.81	191.91	25.71	78.53	7.46	1093.01	0.01	1.12
24	11/02/2012	01:00	6.13	6.31	4.50	4.61	0.70	3.03	34.70	34.03	2.65	173.54	25.24	78.13	7.35	1092.91	0.01	1.20
25	11/02/2012	02:00	4.32	4.53	4.35	4.61	0.94	2.10	24.87	34.46	2.79	163.89	24.69	80.78	7.36	1092.80	0.01	1.21
26	11/02/2012	03:00	3.17	2.82	4.22	4.58	1.41	1.70	20.93	19.31	2.56	188.71	24.55	80.84	7.27	1092.68	0.02	1.19
46	11/02/2012	23:00	2.99	7.92	4.70	4.81	7.11	8.35	46.35	44.70	4.14	162.25	26.22	73.28	7.05	1090.94	0.02	1.36
47	11/02/2012	24:00:00	3.00	4.86	4.50	4.85	7.22	6.60	28.00	33.94	2.94	159.55	26.25	69.98	7.12	1091.07	0.03	1.22
48	11/03/2012	01:00	2.89	3.55	4.41	4.87	6.96	5.52	28.33	32.12	2.77	171.64	26.08	66.88	7.18	1090.90	0.02	1.20

	Date	Time	NO	NO2	CO	CO 8hr	O3	O3 8hr	PM2.5	PM10	Wind Speed	Wind Dir	Temperature	RH	Solar Rad	BP	Rain	V Wind Speed
8744	10/31/2013	09:00	0.29	8.22	1.67	1.65	11.34	7.32	65.63	105.75	3.85	33.74	24.41	70.72	381.20	1098.76	0.03	1.73
8746	10/31/2013	11:00	83.85	6.64	1.52	1.60	11.18	8.33	55.00	97.00	5.06	68.82	27.14	72.07	635.26	1098.31	0.03	1.47
8751	10/31/2013	16:00	0.06	4.73	1.65	1.67	16.51	14.60	53.83	98.71	2.82	171.80	28.97	67.30	234.17	1094.12	0.01	1.23
8752	10/31/2013	17:00	0.06	5.99	1.66	1.66	13.56	14.92	48.14	86.52	2.33	203.43	28.18	72.28	71.73	1094.18	0.01	1.16
8753	10/31/2013	18:00	0.25	9.42	2.01	1.71	7.40	13.98	54.33	109.96	1.62	151.81	27.14	78.27	9.41	1094.28	0.01	1.07
8755	10/31/2013	20:00	24.80	15.38	3.17	2.00	4.34	12.21	119.80	241.38	0.46	63.04	26.06	85.49	7.94	1095.53	0.01	1.00
8756	10/31/2013	21:00	37.46	13.24	3.84	2.27	4.50	10.90	149.10	284.88	0.60	250.96	25.69	88.55	7.89	1096.22	0.01	1.03
8757	10/31/2013	22:00	54.02	12.70	4.18	2.58	4.40	9.28	186.17	310.06	1.96	319.32	25.39	87.12	7.53	1096.56	0.01	1.19
8758	10/31/2013	23:00	32.12	12.90	3.28	2.78	4.17	7.44	155.12	246.16	2.18	26.70	24.63	87.34	7.56	1096.66	0.01	1.22
8759	10/31/2013	24:00:00	14.99	12.66	2.53	2.89	4.75	5.97	88.45	134.19	2.95	24.14	23.90	85.29	7.28	1096.18	0.01	1.27

Overview

Common Values

Length

Most occurring characters

Most occurring categories

Most frequent character per category

(unknown)

Most occurring scripts

Most frequent character per script

(unknown)

Most occurring blocks

Most frequent character per block

(unknown)

Interactions

Correlations

Missing values

Sample

Overview

Variables

Common Values

Length

Most occurring characters

Most occurring categories

Most frequent character per category

(unknown)

Most occurring scripts

Most frequent character per script

(unknown)

Most occurring blocks

Most frequent character per block

(unknown)

Interactions

Correlations

Missing values

Sample